ALLNIC AUDIO H-3000 Manuale d'uso - Pagina 8
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as it has a phase control switch on the front panel of
the phono stage unit.
INITIAL POWER-ON
Once you have your H-3000 in place and all connections have
been made to your turntable and preamplifier, you are ready
to turn on the power for your H-3000. Before you power up
the H-3000, though, be sure you have:
removed ALL the cushion materials from inside the tube
chimneys
selected the output connections that you want to use,
single ended (RCA) or balanced (XLR), on the two
switches on the back of the phono stage
turned the volume down or muted your preamplifier
pressed the button switch on the left hand side of the
front panel of the phono stage, labeled "muting" below
and having button in and out icons for operate and mute,
respectively, to the in/down "mute" position (see Figure
3)
pressed the button switch on the right hand side of the
front panel of the phono stage to the appropriate phase
position, either "normal" (pressed in) or "inverted" (out
position). We suggest starting with "normal".
rotated the knob labeled "input selector" to the
appropriate input, corresponding to the input you will
use initially (See Figure 4), either MC1 or MC2, or MM1 or
MM2
if you are using a moving coil cartridge, set the MC
transformer controls on the top of the chassis to the
factor that you will try initially
checked that all your connections are snug
To turn on the H-3000, press in the button switch on the front
of the power supply marked with on and off icons (see Figure
4). Of course, the off position is the reverse, pressing the
button again so it is returned to the maximum raised
position.
OPERATION
When the power supply is on, the light on its front panel will
illuminate and, if it is in the "operate" position, the light
above the muting switch on the front panel of the Allnic
Audio H-3000 phono stage will illuminate after a forty (40)
second automatic protective "mute" period. The light above
the phase switch will illuminate as well, if the switch is in the
"normal" position at turn on.
To avoid surges to the speakers, it is best to switch between MM
or MC input, or between inputs 1 and 2 of either, only with the
H-3000 in "mute" mode and with your preamplifier volume
down or otherwise muted.
From this point on, operation is straight-forward. All functions
except for MC transformers' gain selection are controlled from
the front panel. Of course, BE CAREFUL about differences in gain
between your sources. Generally, disc players and tuners will
have greater gain than phono stages. That means the volume
setting for listening to your turntable might be too high for
listening to CD's.
When you are finished listening, turn off your power amplifier(s);
then turn off your preamplifier and then turn off the H-3000 last
by pressing the on-off switch on the front panel of the power
supply so it returns to the out position.
In the case of any failure, please contact Hammertone Audio for
assistance.
THE CURRENT METERS
These illuminated meters indicate the current supply to the gain
tubes in the H-3000. They are indicators of failure or damage to
the function of the unit. There is one meter for each channel.
The needle should be between the two parallel lines just left of
centre on the meter face. Any failure of the tubes or circuits in
one or the other of the H-3000's channels is indicated by the
needle on the meter for the respective channel moving out from
between these two parallel lines.
If the needle has moved to the left of the parallel lines
on a meter, it means that one or both the E810F tubes
for that channel is failing.
If the needle on either meter moves to the right of the
parallel lines, it means that one or the other of the
voltage regulator tubes (7233 or 6485) for that channel
is failing.
In the case of any failure indicated by a meter, please contact
Hammertone Audio for assistance.
TUBES
The H-3000 uses the following tubes (please see Figure 6):
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